/Engine/Plugins/Runtime/Metasound/Source/MetasoundGenerator/Public/MetasoundGenerator.h
DECLARE_TS_MULTICAST_DELEGATE_FourParams ( FOnOutputChanged, [FName](API\Runtime\Core\UObject\FName), [FName](API\Runtime\Core\UObject\FName), [FName](API\Runtime\Core\UObject\FName), [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IOutputStorage](API\Plugins\MetasoundFrontend\IOutputStorage) > )